Made of Phthalates free PVC closed"Òcell foam, superb cushioning Two surfaces in one mat, one side ribbed and one side smooth, fits everyone's preference Body heat retentive, impervious to water Easy to clean with a damp cloth Lightweight mats are easy to roll up and have a convenient carry handle. Great for Pilates mat exercise, fitness and routine daily workouts Hang them by the handle to save floor space and keep them organized.